ListTest for List, not Vector
Merge pull request #798 from btakashi/master

Fix sample ListTest comments, testing ArrayList not Vector
Extract annotations validation to a single class.

The AnnotationsValidator can be used by any runner now. TestClass
does not provide access to the internal maps of fields and methods
anymore.
Merge pull request #753 from stefanbirkner/modularize-validator

Extract annotations validation to a single class.